Camera



j. P. CLEAL AND C. H. G'IBBONS.`

CMVIERA.44

APPLlcATloN FILED AuG.22, 1918.

mme@ Aug. 22, 1922.

Lla,

2 SHEETS-SHEET l.

AW/165 ff 6/530/1/5 1.v P. CLEAL AND C. H. GIBBONS.

CAMERA.

APPLICATION FILED Aue.z2, IsIa.

Patented Aug. 2l NZ 2 SHEETS-SHEET 2v iti rive i l c l...

Josnrii Prior orinar., or ronoivro, cures-io, ann cuentas nannison cannons, or

VICTORIA,

nnrrrs'rr COLUMBIA, Canapa.

oaivrnna.

Speci cation of Letters Patent.

Patented Aug. 22, 1922.v

Application filed August 22, 1918. Serial No. 251,031.

is to 'devise automatic means i'or' winding,"

the nlm to the new position atter each ei".- posure whether it be a snap shot, time or bulb exposure, and such as will in no way atleet or alter the operation and functions ot the ramera as normally performed and as constructed previous' to our invention, and it consists essentially ot the tollowing arrangement and construction of parts hereinafter more particularly explained.

Fig. 1, is a perspective view of a camera shown in the open position and with one of the side plates oi' the camera body removed.

Fig. is al cross sectional view through the body ot the camera.

Fig. il, is a perspective view of the end plate removed from Fig'. 1 and showing1 the parts carried thereby as seen 'from the reverse side to that shown in Fig. 1.

Fig', 4', is anv end elevation oit the camera bodyiwith the end plate removed.

Figi. 5, is an enlarged sectional detail through the friction members and that portion oltlie casing body by which the Jfriction members are carried.

Fin'. 6, is a plan sectional detail on line o--r/ Fig'. 4.

Fig'. 7', is a perspective detail ot the double pawls employed in our mechanism.

Fig'. 8, is a plan view ot the pawls-shown in Figa 7. n

Figs. 9 and 10, are perspective details of the pawl members separated apart.

Fin'. 11, is a perspective detail o1' the gear provided with the ratchet hub employed in connection with our nism.

Fig. 12, is a perspective detail of the nlm engaging member co-actingj with the gear Prior Gmini.,

reel-winding mecha-v the parts being` shown inthe position when a snap shot exposure is being made.

Fin'. 14, is a similar View to Fig. 13, showing the parts in the position they assume when a time exposure is being made.

Fig. 15, is a side elevation of the parts shown in Figs. 13 and 14.

Fig. 16, is a sectional' view ot the pneumatic cylinder carried by the lens structure for operating our rewind mechanism-from the bulb.

Fig. 17, is a perspective'detail of the angle plate co-acting with the pawl member 18 of our double pawl 18.

Fig. 18, isv a front view of the leaie sprint; member by which the plunger 9 is resiliently held.

.ln the drawings, like characters of rei".- erence indicate correspoiidine,` parts in the various iigures.

We will iirst describe the parts which are common to the ordinary construction oit the camera.

1 indicates the casing or body oi. camera and 2 the bellows secured in the usual way within the camera and withdrawable through the orifice 1X oit the casimq 1. 3 indicates the lens which oi usual constriction and provided with the usual shutter operated in the usual way. 4 indicates the disc carried by the lens structure and on which is inscribed the various exposures according to common practice, that is, time, bulb, twenty-fifth, iiitieth and one hundredth' second snapshots. 3 indicates a pointer'carried by the lever 3X and co-actin'g with the `disc 4 and the time indications thereon. 5 indicates a pneumatic cylinder by which the shutter is operated and provided with the usual piston head 5X which rises when the bulb X is pressed' so as'to force air through the tube 5X into the cylinder 5. Within the casing 1 and above'and' below the bellows 2 are located the usual compartments 6 and' 7. ln the compartment 7 is placed the filmV roll S, heldin the usual manner at the ends by spring pressed plungers SX and 8. 9 in-- dicates the takeup spool located in thecompartment 6 and held in the usual manner' by the spring` pressed plungers 9X and 9'. 10 indicates' the film whichv passes up"- wardly from the film roll 8 and is attachedto the core/ot the spool 9.

It will be understood that the ordinary camera is operated in one of several ways: First what is termed a snap shot can be taken, there usually being about three retardations on the indexdisc such as shown at 4f. These so called snap shot operations can in no way be controlled by the bulb other than to release when the proper focus and position have been acquired. Second, a bulb exposure can be made by moving; the indicator point to the proper indicating; position, such as is indicated by the letter B on the indicating disc 4 and then pressing; the bulb and holding it compressed the length of .time for the exposure and releasing it. Compressing the bulb opens the shutter and releasing the bulb closes it. rlhirdv time :exposure can be made by moving the indif cator pointer tov the other or extreme indieating position indicated'by the letter T and the bulb compressed and releasedfto open the shutter. After the proper predetermined length oit time. the bulb is airain compressed and released, thereby closing the shutter, thus pertormingtwo distinct operations.

It will be understood, ot course, that eording to common practice it is necessary to wind the film forward anu ally to new position after each exposure. It anything` should happen to disturb the focus or any ob* ject should accidentally intervene betrYY n the camera and the subject the opportunit)7 to take the picture may perhaps'be lost before the hlm could be moved to the new posit-ion. It is to overcome this diliiculty and provide automatic means tor moving the lihn to the new position atter eacli'exposure that the improvement hereinafter to bc described is designed.

We will first describe the construction and operation of our device in relation to taking a snap shot picture.

The lever 3X is provided with an extension 32 by which it may be manually operated.

11 indicates a pneumatic cylinderl which is supported by a bracket 11x carried'V bythe frame of the lens 3 adjacent to the pneumatic cylinder 5. About half way up the side oit the cylinder 11 is formed a nipple projection 11', the bottom of the cylinder being provided with -a nipple projection 112. The rubber tube 5X extending' from the bulb to the pneumatic cylinder 5 is provided with a branch 5 which is connected to the nipple 112 forming the tube 52 into'Y formation,

one branch as above indicated being connected to the cylinder 5 and the other branch to the cylinder 11. This construction ensures that the shutter will be operated as at pres-l ent immediately air enters the kcylinder 5. 113 indicates the plunger ot thev cylinder 11. provided with plunger'rod 114 having a head 115.

The construction above describedin rela-r tion to the cylinder 11 is such as to prevent any action of certain parts to be hereinafter described until vthe cylinder plunger. has reached a position above the nipple 11'., which would thereby open the vair port formed by such nipple and allow the air to pass outwardly therethrough.

lWithin the casing 1 of the cameral at one side thereol' is formed a compartment 1 in which is located portion of our operatingF mechanism.

12 indicates pneumatic cylinder located within the compartment 1 and provided at its lower end with a nipple 12 extending outwardly from the periphery thereof. 13 indicates tube connecting` the nipple 11 of the cylinder 11 with the nipple 12X oit the cylinder 12. '12 indicates a plunn'er co-actinn; with the cylinder' 12 and provided with a plunger rod 122 havingl a notched upper end 122.

When the plunger 113 is forced upwardly above the nipple 11 Aair passes through the tube inte the lower end o'l" the cylinder 12.y rforcingv the plunger thereof upwardly.`

111 indicates rocking pawl pivotally mounted on a stud 15 carried by the casing wall ot the camera. @ne portion of the pawl let extending' to one side ot the d 15 is offset from the other portion extending to the other side ot the stud 15, these porV tions beine` indicated by the numerals 111X and 14. The portion 14; is provided with a rounded lower portion fitting' within and resting` upon the base of the notchv123 et the plunger rod 122.

lt will, o'l1 course, be understood that the portions 14: and 1.41.2 are rigidly connected together and that when the plunger rod y122 is forced. upwardly as above described the pawl 14; is swungT upon the stud 15.

16 indicates a bar. the lower portion16X of which is slidably held in a vertical bearing bracket 1'?. The 'intermediate portion 15 is offset so that the portion 162 thereof is located centrally of the camera casing and; is slidably supported in a bracket 17X. The upper portion 163 is carried over to the liront portion of the casina* by the intermediately curved portion 164 for a purpose which will' hereinafter appear. the upper portion 163" being` slidably held in a' bracket plate 17 carried by the casing.

It will be noted that the front face ot the bracket 17 is provided with slotted open 172 exposing' the corresponding` face of. the bar 1,6. To this exposed portion is pivotally connected the opposite end of the pawl 14tby the pivot pin 1412. It willthus be seen that `when the plunger' rod 122 is `carried upwardly the pawl 14 .is tilted on its pivotformed by the stud 15 and the bar 16 thereby drawn downwardly, the pin 142 Fitting freely enough within the pawl 14 to allow et its downward movement. When the pawlE 14" and the' bar 16 connected thereto has reached the limit of its stroke it is locked in position by mechanismi which wewill now describe r' The portion 14X of the pawl 14 is provided with a cam like projection 1413. 18 indicates a double' pawl clearly shown in detail in Figs. L 8, 9 and: 1501 The double pawl 18 is formed" by two pawl members 18X and 18. The paw'l' 18 is pivotally securedto the wall of the easing` 1 at 182. Thev upper end ot the pawl 18 is provided with an outwardly inclined' portion 183 and the lower end with' a depending; portion 181" havingy a head 185. 18G indicates a portion extending` at right angles tothe body ot the pawl 18 and provided at its endl with an orice 18T. 18S indicates a lateral projection extending :trom the body of the pawl 18" for a purpose which will hereinafter appear;

19 indicates an angular plate provided with aA slot 19* i`n` its horizontal flange 19 a right angular' or vertically disposed 'lianfre 192 being secured; to the side plate of the camera. Thed'epending' portion 181 as above described passes through the slot 19X and thereby limits the motionotthe pawl member 1:8. To the pa-wl member 18 at 187 is pivotally secured the pawlv member 18X. The main portion 18 of the pawlV 18 is provided at its upper end witha curved portion 1810 which is designed. to be brought into engagement with. the cam projection 14:3 of the' pawl 141i. The lower portion 1811 of the' pawl 18X is oftset at 1812., the extreme outer end ofthe portion 1811 heini; provided with? an orifice 1813 thii'ough which and* through the hole 1187 passes a pivot pin 1811lpivotally connectii'ig' the pawl members together. 1815 is a small lug` extending trom the upper edge of the portion 1811 ot the pawl 18X.

2O indicates a tension spring` connecting; thelug 185 with the pawl member 14* at tbe same side of the stud 15 asA the cylinder 1Q. The lateral projection 188 ot the pawl member 18 extends against the inner edle of the pawl member 18X as clearly indicated in Fig'. 7 and thereby limitsA the movement ot the pawl 18X.

121 indicates a lug; extending trom the plunger rod 122. 125 indicates a pin extending` from such luis` and on which is journaled a roller 126. The action of this paw] is as follows: n

The pawl 18 is pivotally mounted upon the plate of the camera casing` and upon which all the mechanism is mounted. The paw'l 18X` is pivotally mounted upon the pawl 18. The angular plate 19 limits tion ot the pawl 18 and the portion on the pawl 18 limits the movement ot the pavvll member 18X. The spring 2O fastened tothe pawl 1.`^nemb`er'18Xr and the vupper end ot the pawl 14,1' outside the tulo/rum pointI the motends to draw the outer portion of the pawl down and the tulcrum point torine'd by the pin 181 upward. This action would tend to torce the top part ot the pawl 1 8 to the right and the top part ot the paw] 'i8i to the le1`tin other words, spreading the pawl members apart. The upward erf;- tension oit the pawl member 18 prevents this sprezuling' action and 'forces the movement both pawls at the top to the right and away from the tulerum point oi' thc pawl 141.

lWheii the plungfjer in the air cylinder 1i. rises. the roller 152G contacts with the under bevelled portion 183 at the top ot the pawlf member 18. forcing' the pawl against the tension of the spring 20 to the lett. TheA its natural inclination pawl 18X because or follows this movement ui' '.l it' is arrested by the inside curved portion at the top o'l the pawl comingv in contict with the stepped or com portion 1 of the pawl 14. As soon as this cam portion 'is raised sutiiciently the top end ot the pawl `18X snaps into posidv tion under the cam` portion 1413. The pai'vl 18X will be held in this position until the roller 126 has' rereded below the under bevelled portion 1,81 ot the pawl member 18. The action ot the springY 20 will then carry the pau/'l back to position. 18 by the natural action ot theI spring` and its position with relation to the ful'crum point ci the pawl and the pawl 18X'will be carried baclr by the upper extension 188 ot tho pawl 18. This action will continue until the upper end ot the paw] 18X b as been drawn ombeneath the cam portion 1413 on thc pawl lilwhen the spring` Q0 will cause the outer endv ot the pawl 1d Vto be snapped down quickly. rocking the pawl on its `tulcrum at the point Formed bythe stud 15. carrying; the pivot pin 111:2 upward and thus forcing' the bar 1G upward very rapidlyr` until the upper end which is guided by' the slotted plate 17- strikes to co-act with mechanism. which we will hereinafter scribe. 'f Y 21 indicatesy a stud carried by the' ond plate of the casing` 1. 2Qy indicates a double pronged pawl swung upon the stud l1 and providedvxith a lateraily extendpa arny a 'a inst which the upper end ot the bar 16 stiilies when il :ed upwardly as hereinbetcre de ibed rllhe pawl 2:2 proif'ided with two prong' members which extend Averticallyv iujiwarc, and the prono; member 2. the upper end ot which .is slightly odset out oit alinement with the pawl prongs Q8 indicates shaft joui'- naled in the side walls of the casino` 1.v 1t will be noted that the opiiiosite side of tbe casing; is also formed with a compaitmenf.A 12 corresponding; to the compartment 1. lt will also be noted that the shaft E28 eX- tends through these compartments 1 and The p owl' v the gear 33.

12 as Will be clearly seen on referring' to shoulder 24X which normally engages withl the upper end of the pawl prong 22. The` cam'25 is provided with a shoulderI 25X Which is. in the path of and directly opposite theoifset upper ond of the pawl prou 222. The cams 241- and 25 and the prong' pavvl members 22 and 222 are for the purpose of limiting` the rotation of the shaft 23 to one revolution at each operation.

l7Ve will new describe the mechanism by Which the shaft 23 is driven:

26 indicates a clock spring' which is secured at one end 256 to the Wall of the camera caseand at the opposite end at 26 to a short shaft 27 which is journaled in the side walls of the camera case.

28 indicates a ratchet Wheel secured to the shaft 27, The outer end of the shaft 27 is provided with a swingable gripping' handle 27X of the type commonly employed and used in the turning of the rewinding roll of a camera film.

29 indicates a gear mounted upon the shaft 27. 30 indicates a pawl pivotally mounted at 30X upon the gear 29 and held in engagement With the ratchet wheel 23 by a leaf spring 31 carried by the gear. The result of Winding or the storage of power motion in the spring 26 would be to force the bevelled portions of the ratchet 28 to pass the lower end of the pawl 30 and said paWl Would snap into cach one the notches formed between the teeth of the ratchet as the ratchet is turned but Would prevent the revcrse'movement of the ratchet by the fact of the paWl catching in `rthe teeth thereof, that is to say, the short face of the ratchet Would be forced against the end of the pavvl until released. rllhe action of the spring would cause the n ear 29 to krevolve in the same direction as the un.

Winding of the spring and in turn would cause a pressure to be exerted againstthe pinion 32 mounted upon the stud 21 and in engagement With the gear 33 secured to the shaft 23.

34 indicates a conical friction member `mounted upon the springplunger 9', such conical member being` provided with a sleeve-like portion 34X surrounding the .spring plunger 9. Upon this sleeve-like portion is secured a pinion 35 which is 'in mesh with the upper peripheral portion of 36 indicates a casing; surrounding the member 34C and in which is also containeda movable conical friction member 37, such member being; splined to the spring plunger 9. tion members 37 and 34 are resiliently held together by a conical spiral spring 38.

It Will be readily understood that so long of arrow.

vment 12 of the camera case.

rlllhe conical fric- 1, Y

ymounted a pinion 40, the pinionfiO meshing as the pawl prong 22 maintains this position and contacts with the shoulder 24X of the cam 211 it acts asa stop element to such cam and no movement of the mechanism` which would be actuated bythe spring 26 can be possible until this cam is released.- Then the movement of the parts Would at once take place. The action of the -bar 16 against the extended portion 22X of the paWl 22 provides this release by means of 'the blow Which the bar 1,6 administers to the part 22X when the bar 16 is released las has been previously described. This blow causes the prongv portion 22 to move outward from the. centre and from beneath the shoulder 241%, the other prong portion 222 simultaneously `moving` in towards the centre of motion of the cam and beneath the shoulder 25X ofthe cam 25. Thus the camv 2li would be released and would allow of one revolution of the shaft 23. As this revolution is performed theprong 222 is in engagement with the periphery of the cam 25, the motion startingl from beneath the shoulder 25X, the cam revolving in the direction After such cam has revolved about tvvo-thirds of its revolution the radius of the cam gradually increases forcing the prong' 222 outward and thereby Acarrying` the prong- 22 inward towards the centre of motion, and as the revolution is completed the prong` 22 is carried again beneath the shoulder 24X thereby positively stopping further revolution of the shaft-23. 1t Vwill thus be seen that motion imparted will be `positive and the result will be that one complete revolution of the shaft 23 vWill be performed and the rotation of the` core 9 of the film take-up roller connected to the shaft 23 through `rear 33 and pinion 35 and friction members 3d, and v.37 Will be caused every time that the portion 22x of the pawl 22 is struck by the bar 16, and the bar 16 would not be moved except through an agency of the air cylinder 12, and co-acting parts which in turn is actuated througijh the bulb tube 5X. as has been previously described.

l/Ve will now describe the mechanism lby Jgfhich power is transmitted directly to the lm. y

@n the opposite end of the shaft 23 is mounted a ,Q'ear33x located in thev compartn The gear Wheels 33 and 33 are of the same form and correspond exactly one to the other.`

39, 39, indicate stud shafts mounted'in each side Wall of the main casing 1 and extending` respectively across the compart-` ments 1. and 12 and projecting into the interior of the camera in front of the path of the film strip. Upon each stud 39 is with each of the Vgear Wheels 33y and 33X. Each gear Wheel 40 is provided With a hub l-l having a ratchet periphery 41X. 42 indicates a spur wheel. A spur wheel is mounted freely upon each stud S9 and held thereon by a collar 4t2X secured to the cor- .respondingshaft. ft2 indicates a pawl pivotally mounted upon each spur wheel 42 and spring held in engagement with the ratchet hub Lil.

`it will` eff course, be understood that the spur wheel i2 is mounted on each of the shafts 39 and that each spur wheel is located in proximity to the film strip and slightly within each edge thereof. The iilm strip l() is provided in proximity to its edge and in a line with the spur wheels 4t2 with a longitudinal row of perforations 10X into which the spurs 420 of the spur wheel Ll2 extend.

lt will .be understood that the ratchet hub el is provided-with the same number of teeth as there" are projections 4:20 upon the spur wheel 42, rihis construction is designed .so as to transmit positive motion in the forward direction to the .film strip but to permit of movement in the opposite direction for a purpose which will hereinafter be described.

lt will be apparent that when power 'from the spring 2G is allowed to be exerted to more the mechanism driven thereby the spur wheel ft2 will be revolved in a direction to move the ilihn in a correspondii'ig` direction by engaging with the perforations lfb', that is to say, the film strip will be moved forward in the direction of arrow (see the required distance because the spurs of thc spur wheel 412 are held in positive alignment and will protrude through the slotted perforations, moving the `lilm by each operation the required distance. The mechanism thus described, of coursel` does not necessarily take up the film but will merely place the proper section of the film at the point of exposure at each action of the camera. The film roll is inserted according to common practice within the compartment 7 of the camera body and is `wound upon the core of the roll 9.

lt will be also understood that the winding` mechanism of the take-up spool must provide Yfor the difference in diameter of the roll wound upon the core 9, the roll gradually increasing in diameter as the lilm is fed thereon, rit the start, of course, the roll is only naturally the thickness of the core upon which it is wound but as more and more of the film at each successive opn eration o'f the camera is rewound on to -the core. the diameter of the core will increase and the tendency would be to pull the film faster than it would be 'fed forward by the spur wheel which means that the rewinding spool must be arranged to slip but atthe same time to have tension enough to rewind the film that is fed to it. To accomplish -this upon ythe ordinary rewinding centre of the. camera which is formed by the spring `pressed plunger 9 .are mounted two 'friction members and 37 hereinbetore described, the. member 34 being connected to the pinion 35 and through the gran* 253 to the shaft 23 which is driven by the spring- 26 as has been before described.

This would mean that the 'friction mem- `heramoves positively and that frictional slippage :occurs between it and the other member 3T. These members frictionally engage, the friction member 37 being splined to 'the `spring' plunger 9 in such a way as to transmit motion to the plunger to revolve the roller 9. vThe portion 9 is held in its forward position by the leaf spring 5)". This construction is to enable the portion 9 to be pulled .outwardly yso as to insert the new spool and to be returned `to its inward position as soon as it -is released. Tobthe head of the plunger 9 is pivotally secured the handle 93 of the type which is commonly employed for this purpose. By this means also the spool 9 may be turned in order to wind the film thereon to bring it to the position for the first exposure, there being sufficient slippage between the members 34 land 37 to allow the 'spool to be independently moved to wind the film forward to the proper `first exposed position.

It will be understood that the ratchet it and pawl l2 previously described would allow the hlm to be drawn forward into the proper position, the pawl 4t2 .slipping 100 over the ratchet in the direction of arrow (see Fig. il) and dropping into position at any point to pick the film up the moment power is supplied in the proper direction` that is to say, that the gear i0 will 105 revolve in .the direction of arrow the-reby carrying the short face of the ratchet against the end of the pawl carried by the spur wheel fir-2 to revolve such spur in the direction to feed the iilm on to the spool 9. 110

The mechanism and operation so Afar described relates v to the operation when a. snap shot is being taken. llVith a bulb exposure, that is7 where the bulb has been held pressed for a definite time and then 115 released to open and shut the shutter, the operation is `the same as when taking a snap shot, that is, by the pressure of the bulb the parts are set to trip the releasing mechanism of the spring drive locking 120 mechanism and by the release of the bulb the tripping mechanism is -tripped to release the drive andallow it to operate.

To this end the operator will tmove the part Sito the proper indicating mark for 125 the exposure lesired, realizing that the movement of -the indicator 32 when it has been moved from a snap shot to a bulb exposure has not interfered in any waywith the natural working o'f the shutter or any other 130 vpart but that it a time exposure is made the movements which have been -described must be prevented. For a time exposure the two compressions of the bulb must necessarily ditier in function. y

lVhen it is necessary to make two compressions of the bulb to actuate the camera to open and close the shutter thepart 32 wouldbe moved vwith the indicating pointer to the lett of its extreme position, that is to say, with the pointer opposite the indicator letter T.

43 indicates a standard plate extending outwardly from the frame oit the lens 3. 44 indicates alink pivoted at its upper end at 44X` to the standard plate 43, the lower end depending freely. 45 indicates a pawl pivetally mounted intermediately of its length upon the lower end of the link 44, the upper end oit' the pawl being provided with a ratchet notch 45X and the lower end of the pawl with an out-turned portion 45. 46 in-.

dieates a link pivotallymounted at one end upon the same pivot point which connects the pawl 45 to the link 44. r1`he link 46 extends. inwardly towards the lens frame and then upwardly circumferentially therearound, the extreme end being `formed by an enlarged arc-shaped portion 46X extending around. the upper portion ot the indicating plate 4 and provided with a concentric slot 46 through which the pointer 3 ot' the indicating lever 3X passes. Also mounted upon thestandard plate 48 is a pawl 47 provided at its lower edge with a ratchet tooth 4"X normally engaging the ratchet notch 45X of the pawl 45. The free end of the pawl 47 is onset-outwardly and provided with a depending portion 47 extending over the head 5X 'of the piston of the cylinder 5. 48 indicates a tension spring connecting the lower portion ot the pa 45 with the pawl 47 in proximity to its pivotal point. The head 115 of the plunger rod 11t located in the cylinder 11 is provided with a depending extension 11G'upon whichis mounted acam member 117 and spring held pawl 118. The upper end oi' the cam member 117 inclines downwardly towards the pawl as clearly indicated in Figs. 13 and 14. `When the device operates normally, that is, when a snap shot or bulb exposure is used, the lower end ot' the pawl45 engages the inclined upper tace of the cam 117 and passes downwardly between the pawl 118 and the cam 117. l/Vhen, however, it is desired to take a time picture and the pointer 3 is thrown to the extreme or timed position, the pointer passing through the slot 46 engages theend of the slot and draws the link 46 over towards the lens frame thereby swinging the link 44 upon its pivot 44X and carrying the lower' end ofthe pawl 45 in a corresponding direction, the upper end of the pawl being held in a stationary position by the ratchet tooth 47X ot the pawl 47. By this means the lower end ot the pawl 45 is swung into a position over the spring held pawl 118. Under these conditions'when the bulb is pressed to take atime picture air enters the cylinder 5, operating the. shutter to open it. Simultaneously air enters the cylinder 117 'forcing the pawl 118 upward into contact with the lower end of the pawl 45 thereby preventing the complete upward movement ot the piston 113 preventing it passing above the opening of the nipple 11and thereby preventing` air passing through-such nipple to operate the rewinding mechanism of the lm.

By the first pressure ot the bulb and the upward movement of the head 5x the pawl 47 is raised so as to carry the tooth 47 out of the notch 45 thereby releasing the upper end of the pawl 45. The pawl, however, is heldv from swinging back to its normal position by means of the upward pressure ot the pawl 118 against the lower endof the pawl 45. As soon, however, as thevbulb is released this upward pressure is released and the upper end et the pawl 45 will spring forward. 1n this position the long tace ot the tooth 47 X ot the pawl 47 will rest on the upper end olf the pawl 45 and the tooth will. be out of engagement with the recess. Upon the next pressure oi' the bulb the pawl 11S and cam 117 will be carried upward in such relation to thelower end of the pawl 45 that such lower end will strike the inclined upper end of the cam 117 andbe forced inwardly loetween the cam and the pawl 118 allowing the piston 113 to rise. to the ttull extent so that air will pass through the orifice of the nipple 11 and actuate the rewind mechanism. Simultaneously by this movement the upper end ot the pawl 45 would be carried back so that the tooth 47X would re-engage with the notch 45X. Thus it will be seen that means are provided whereby the first pressure `of the bulb which opens the shutter will be in operative upon our rewind mechanism, whereas the second pressure ot the bulb or pressure which closes the shutter will operate our rewind mechanism and move the lm to the next exposure position. This operation will be repeated as long as the indicating pointer 3 is in the time, position;

It may be necessary at times to move the film independently of the bulb. in order to accomplish this we have provided the pawl 14 with an extension 14'". The iront wall of the camera body is provided with a vertical slot 1o extending into the compart-v ment 1. 4S indicates an angle plate'iitting into the corner of the compartment 1', one arm of which nis provided with a vertical slot 48X and the other arm with an outwardly extending finger piece 48 extending through the 'slot 1. 49 indicates a member pivotally mounted upon the angle plate 48 having an loe outeturned upper end eriending` beneath the extension` le20. The member 19 sprin held in position by a tension 50. will thus be seen that when it is desired to operate the rewind mechanism. all that it is necessary to do is "if, linger fi-.8 upwardly in the slot "i the member '19 against the extension 1119 so as to roch the pawl le: in the same unnei as it is lifted by the pistou et' the e g.linder 12 when the latter 'is actuated by the compression of the bulb.

rom this description it will be seen that we have devised a rewind mec ninism for camera lms whif'h will be operated automatically by the operation oi2 the bulb and which may be operated either ly' a single pressure of the bulb as when taking a snap shot or bulb exposure, or by every second pressure of the bulb when taking; a time pieture. an d. th at we h ave devised such device which in no way impairs the ordinary operative conditi ns under which a camera used and that all things which can be done by a camera at the present time by the operator can be done with a camera with our improvement attached. und also our device accomplishes this purpose without any eK- tra conscious effort on the part et the operator and also it .iii-ed the Elin muy be manually wound to its new position.

Also by our device the rewind beine' automatically accomplished after eaeb exposure always leaves camera ii'ist-antly reaiily for use so that it anythingv should liapgen to disturb the 'focus or any object should pjet accidentally between the earner-a and the subject, the opportunity tor takingl the picture will not be lost.

lthoilxrh we describe mechanism driven by spring' means we do not Lr-fish to confine ourselves to this particular means but desire to cover means ln'oadly to automativully move "he film, the spring; driven meclianisin only being); adopted for the reason that it could be more e. l

ily incorporate-f into the term of camera which the mechanism has been inserted. l

tl ther means could be employed for providing` the motive power whereby the mechanism is operated.

`What we claim as our invention is:

1. 1n a film feeding` device tor cameras, the combination with the motor driven film rolls, ot a pneumatic plunger arranged in the case. a rotating' stop member connected with the motor. a pawl adapted to engage said stop member to arrest the motor, means operated by said pneumatic plunger adapted to strike the pawl to release it from engagement with said rotatino' stop member, and means operated by the motor tor returning; the pawl to its stop position.

2. 1n a film feeding) device 'tor cameras,

the combination with the motor driven lilm rolls, oft a pneumatic plunger arranged in the c ,era case. a rotating stop member connected. with the motor, u rocker member operated bv said plunger, means tor holding the r-z' r meml'ier following the initial operation ot the plunger, a pawl adapted to i l stop member to arrest the mo ig; operatetbur slit ably arranged d connected with said rocker adapted to engage said pawl e. means ngt-usted by 'the reof said plunger tor releasing said rocker member and sliding; bar to allow the bar to strike the pawl and release it from the stop member, and means operated by the motor for retiuning said pawl to its stop position.

in a iilin feeding device ttor cameras, the combination with tl .e motor driven film rolls, ot'a pneumatic plunger arranged in the c .era case, :i rorlrer member engaging said 3er, a pawl pivotally mounted in the c ne .ging said rocker member l ra sed position Jfollowing` the outwaril move. 'lent ci the plunger. a spring1 connecting' said pawl and rocher member, means operated. b ,y the return ot the plunger 'For withdrawing; said pawl from the rocker member. a siidable bar connected with the roel member, a rotatable stop connected with t otor. a pawl eng` said stop and a( d be disengaged therefrom by the operation et said bar Yfollowing; the release oit the rocher member.

il. a film 'feeding device tor cameras, the couibinat'on with the motor driven iilm rollA and e stop member carried thereby, of a pneun'uitic plunger arranged in the camera case. a ro A:e member engaging sau plunger, means A.or holding; tue rocher member in a raised position Yollowing the outward `'peration ot the plunger engaging same, a bar slid-.ably arranged .in the rase and eno said rocher member. pawl adapted to be ope; ted by said bar, means 'tor`automalically moving' said to release said pawl trom the stop member, and manually operable means tor operating said bar.

5. 1n film ihedinp,v device tor cameras, a spring driven rotatingelement, a rocking,`

portion adapted to engage one of said arms to torm a stop, a portion adapted to engage the other of said arms to rock the same, and a mechanism operated by air pressure and released by the reliei" of such pressure to rock said member' from its stop position.

7. ln a iilin. feeding device for cameras, a

. spring driven rota-ting; element, a rocking;

member, a cam. carried by the rotating element engaging said rocking member and held thereby, `an arm extending,l from the rocking member, a striking; bar held in guide Ways, and adapted to strike said arm, means operated by air pressure for Withdrawing the striking bar to the striking` position, means operated by the reliell of the air pressure ior releasing such bar, spring means carrying the ba to strikey against the arm of the rocking member, and means for automatically carrying the parts back to their normal position.

8. ln a :film 'feeding device for cameras, a spring driven rotating element, a rocking member, a cam carried by the rotating` element engagingr said rocking` element to liorm a stop, an arm extending from the rocking member, a striking rod held in guide Ways,-

an air cylinder, a piston for the cylinder, a rocking pavvl connectingthe rod of the piston with the striking bar, locking mechanism for holdinpgfthe paivl in the strikingposition, and spring` means for releasing the locking means and carrying the striking bar to the striking position.

9. in a iilm feeding device iior cameras, a spring driven rotating; element, a rocking member', a cam carried by 'the rotatingelement engaging therocking member to 'form a stop, an arm extending` from the rocking member, a striking rod held in guide Ways, an air cylinder, a piston for the cylinder', a rocking,` pawl connecting the rod of the piston With the striking bar, a shoulder formed on the pavvl, a paivl pivotally mountedin the case and adapted to be engaged by the piston, a pavvl mounted on the latter paivl and adapted to engage the shoulder formed onsaid rocking pavvl connecting the piston rod to the striking bar, and means for suddenly releasing the latter holding pawl from engagement With the rocking, pavvl..

l0. ln a lm feeding` device for cameras, a spring driven rotating element, a rocking, member, a cam carried by the rotatingelement engagingthe rocking member to form a stop, an arm extending from the rocking,` member a striking` rod held in guidevvays, and air cylinder, a piston for the cylinder, a rocking pavvl connecting the rod of the pistion with the striking` bar, a shoulder formed on the pavvl, a member pivotally mounted in the case and having an inclined portion adapted to be engaged by a projection from the` piston and .having an offset portion, a paivl pivotall-y mounted on the offset portion of the said arm and adapted to engage and lock 'the rocking pavvl, a lateral projection on said pivotal arm adapted to engage said pawl upon the recession of the piston to eil-'ect the withdrawl of the paivl carried by said pivotal arm from engagement with the rocking arm to release the striker arm, andy spring means for rocking vthe rocking pavvl to operate the striker arm With a sharp movement.'

1i. ln. a device ofthe class described, the combination With the striking` bfar and pressure supply tube, of a cylinder to which the tube is connected, a piston and. piston rod ,tor the cylinderand resiliently held paivl mechanism operated by lthe upward movement of the piston rod to lock the striking bar in the striking position and capable or automatic release as the piston rod is returned to its normal position.`

JOSEPH PACK CLEAL i ACHARLES HARRISON GBBONS.

Witnesses as to signature of Joseph Pacy Cleal: i

Gro. F. VVoLrF,

O. J. BUCKLEY.

Witnesses as to signature of Charles Harrison'Gibbons: y i

' C. WV. llAn'rIN,l

E. B. MCCARTER. 

